protected internal virtual void PostWalk(DynamicConversionExpression node) { } 
 protected internal virtual void PostWalk(DynamicConversionExpression node)
 {
 }
 // DynamicConversionExpression
 protected internal virtual bool Walk(DynamicConversionExpression node) { return true; }
 // DynamicConversionExpression
 protected internal virtual bool Walk(DynamicConversionExpression node)
 {
     return(true);
 }